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ACPI: EC: Evaluate orphan _REG under EC device

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commit 0e6b6dedf1 upstream.

After starting to install the EC address space handler at the ACPI
namespace root, if there is an "orphan" _REG method in the EC device's
scope, it will not be evaluated any more.  This breaks EC operation
regions on some systems, like Asus gu605.

To address this, use a wrapper around an existing ACPICA function to
look for an "orphan" _REG method in the EC device scope and evaluate
it if present.

Fixes: 60fa6ae6e6 ("ACPI: EC: Install address space handler at the namespace root")
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218945
Reported-by: VitaliiT <vitaly.torshyn@gmail.com>
Tested-by: VitaliiT <vitaly.torshyn@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Rafael J. Wysocki 2024-06-12 16:15:55 +02:00 committed by Greg Kroah-Hartman
parent d63c635e22
commit 17095b1d79
5 changed files with 66 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/acpi/acpica/acevents.h
View File

@ -191,6 +191,10 @@ void
acpi_ev_execute_reg_methods(struct acpi_namespace_node *node,
acpi_adr_space_type space_id, u32 function);
void
acpi_ev_execute_orphan_reg_method(struct acpi_namespace_node *node,
acpi_adr_space_type space_id);
acpi_status
acpi_ev_execute_reg_method(union acpi_operand_object *region_obj, u32 function);

6
drivers/acpi/acpica/evregion.c
View File

@ -20,10 +20,6 @@ extern u8 acpi_gbl_default_address_spaces[];
/* Local prototypes */
static void
acpi_ev_execute_orphan_reg_method(struct acpi_namespace_node *device_node,
acpi_adr_space_type space_id);
static acpi_status
acpi_ev_reg_run(acpi_handle obj_handle,
u32 level, void *context, void **return_value);
@ -818,7 +814,7 @@ acpi_ev_reg_run(acpi_handle obj_handle,
*
******************************************************************************/
static void
void
acpi_ev_execute_orphan_reg_method(struct acpi_namespace_node *device_node,
acpi_adr_space_type space_id)
{

54
drivers/acpi/acpica/evxfregn.c
View File

@ -306,3 +306,57 @@ acpi_execute_reg_methods(acpi_handle device, acpi_adr_space_type space_id)
}
ACPI_EXPORT_SYMBOL(acpi_execute_reg_methods)
/*******************************************************************************
*
* FUNCTION: acpi_execute_orphan_reg_method
*
* PARAMETERS: device - Handle for the device
* space_id - The address space ID
*
* RETURN: Status
*
* DESCRIPTION: Execute an "orphan" _REG method that appears under an ACPI
* device. This is a _REG method that has no corresponding region
* within the device's scope.
*
******************************************************************************/
acpi_status
acpi_execute_orphan_reg_method(acpi_handle device, acpi_adr_space_type space_id)
{
struct acpi_namespace_node *node;
acpi_status status;
ACPI_FUNCTION_TRACE(acpi_execute_orphan_reg_method);
/* Parameter validation */
if (!device) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Convert and validate the device handle */
node = acpi_ns_validate_handle(device);
if (node) {
/*
* If an "orphan" _REG method is present in the device's scope
* for the given address space ID, run it.
*/
acpi_ev_execute_orphan_reg_method(node, space_id);
} else {
status = AE_BAD_PARAMETER;
}
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_execute_orphan_reg_method)

3
drivers/acpi/ec.c
View File

@ -1502,6 +1502,9 @@ static int ec_install_handlers(struct acpi_ec *ec, struct acpi_device *device,
if (call_reg && !test_bit(EC_FLAGS_EC_REG_CALLED, &ec->flags)) {
acpi_execute_reg_methods(scope_handle, ACPI_ADR_SPACE_EC);
if (scope_handle != ec->handle)
acpi_execute_orphan_reg_method(ec->handle, ACPI_ADR_SPACE_EC);
set_bit(EC_FLAGS_EC_REG_CALLED, &ec->flags);
}

4
include/acpi/acpixf.h
View File

@ -662,6 +662,10 @@ ACPI_EXTERNAL_RETURN_STATUS(acpi_status
acpi_execute_reg_methods(acpi_handle device,
acpi_adr_space_type
space_id))
ACPI_EXTERNAL_RETURN_STATUS(acpi_status
acpi_execute_orphan_reg_method(acpi_handle device,
acpi_adr_space_type
space_id))
ACPI_EXTERNAL_RETURN_STATUS(acpi_status
acpi_remove_address_space_handler(acpi_handle
device,